Collective damage of short cracks and fatigue life estimation for metallic materials

IMECH-IR > 力学所知识产出(1956-2008)

	Collective damage of short cracks and fatigue life estimation for metallic materials
	Hong YS(洪友士); Qiao Y; Liu N; Zheng X; Hong, Y (reprint author), Chinese Acad Sci, Inst Mech, Lab Non Linear Mech Continuous Med, Beijing 100080, Peoples R China.
会议录名称	FATIGUE '99: PROCEEDINGS OF THE SEVENTH INTERNATIONAL FATIGUE CONGRESS, VOLS 1-4
	1999
会议名称	7th International Fatigue Congress (Fatigue '99)
会议日期	JUN 08-12, 1999
会议地点	Beijing, PEOPLES R CHINA
摘要	During the primary stage of the fatigue process in most metallic materials, fatigue damage is dominated by the behaviour of short cracks. In this paper, the method considering the balance of crack number density was adopted to evaluate the collective behaviour of dispersive short-fatigue-cracks. The transition point between short and long crack regimes is therefore investigated. The theoretical results show the variation of the transition point with grain size and grain-boundary obstacle effect, indicating the fatigue life inversely proportional to grain size. In addition, a method of dimensional analysis is used in this investigation and similar result showing fatigue life versus grain size is obtained. The theoretical results are in good agreement with experimental measurements of a stainless steel and an Al-Mg alloy.
WOS记录号	WOS:000166896200044
ISBN号	7-04-007582-2
收录类别	CPCI-S
语种	英语
引用统计
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/58964
专题	力学所知识产出(1956-2008)
通讯作者	Hong, Y (reprint author), Chinese Acad Sci, Inst Mech, Lab Non Linear Mech Continuous Med, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Hong YS,Qiao Y,Liu N,et al. Collective damage of short cracks and fatigue life estimation for metallic materials[C]FATIGUE '99: PROCEEDINGS OF THE SEVENTH INTERNATIONAL FATIGUE CONGRESS, VOLS 1-4,1999.